On Wed, Mar 12 2003, Alan Cox wrote:> On Wed, 2003-03-12 at 15:11, Jens Axboe wrote:> > Then go with 128. I'd like to stress again that _if_ you get worse> > performance it's not due to the request being a bit smaller, but indeed> > because 248 can cause badly aligned requests.> > > > > got the IDE layer using 256 block writes even if we have to limit it> > > to more modern drives by some handwaving (8Gb+ say)> > > > Does Windows use 256 sector requests or not? If not, then I'd sure don't> > want to do it in Linux, the handwaving doesn't mean anything then.> > I am told it does, Andre can you confirm this either way. If not then its> time to ask vendors to confirm and any vendor who says "our drives are fine"> we put on the ok list.

Well I can hook an analyzer to such a bastard and verify it for sure,that's one way :)